blendthumb_extract.cc File Reference

#include <cctype>
#include <cstring>
#include "BLI_alloca.h"
#include "BLI_endian_defines.h"
#include "BLI_fileops.h"
#include "BLI_filereader.h"
#include "BLI_string.h"
#include "BLO_core_bhead.hh"
#include "BLO_core_blend_header.hh"
#include "blendthumb.hh"

Go to the source code of this file.

Functions
static void	thumb_data_vertical_flip (Thumbnail *thumb)
static int32_t	bytes_to_native_i32 (const uint8_t bytes[4])
static bool	file_read (FileReader *file, uint8_t *buf, size_t buf_len)
static bool	file_seek (FileReader *file, size_t len)
static eThumbStatus	blendthumb_extract_from_file_impl (FileReader *file, Thumbnail *thumb, const BlenderHeader &header)
eThumbStatus	blendthumb_create_thumb_from_file (FileReader *rawfile, Thumbnail *thumb)

Detailed Description

Expose blendthumb_create_thumb_from_file that creates the PNG data but does not write it to a file.

Definition in file blendthumb_extract.cc.

Function Documentation

blendthumb_create_thumb_from_file()

eThumbStatus blendthumb_create_thumb_from_file	(	FileReader *	rawfile,
		Thumbnail *	thumb )

This function extracts the thumbnail from the .blend file into thumb. Returns BT_OK for success and the relevant error code otherwise.

Definition at line 139 of file blendthumb_extract.cc.

References blendthumb_extract_from_file_impl(), BLI_assert, BLI_file_magic_is_gzip(), BLI_file_magic_is_zstd(), BLI_filereader_new_gzip(), BLI_filereader_new_zstd(), BLI_str_startswith(), BLO_readfile_blender_header_decode(), BT_EARLY_VERSION, BT_ERROR, BT_INVALID_FILE, BT_OK, FileReader::close, BlenderHeader::endian, ENDIAN_ORDER, BlenderHeader::file_version, L_ENDIAN, FileReader::read, FileReader::seek, and thumb_data_vertical_flip().

Referenced by extract_png_from_blend_file(), generate_nsimage_for_file(), and CBlendThumb::GetThumbnail().

blendthumb_extract_from_file_impl()

eThumbStatus blendthumb_extract_from_file_impl ( FileReader * file, Thumbnail * thumb, const BlenderHeader & header )

static

Definition at line 83 of file blendthumb_extract.cc.

References BlenderHeader::bhead_type(), BLI_assert, BLO_readfile_read_bhead(), BT_INVALID_THUMB, BT_OK, bytes_to_native_i32(), Array< T, InlineBufferCapacity, Allocator >::data(), Thumbnail::data, BlenderHeader::endian, file_read(), file_seek(), Thumbnail::height, L_ENDIAN, MAKE_ID, and Thumbnail::width.

Referenced by blendthumb_create_thumb_from_file().

bytes_to_native_i32()

int32_t bytes_to_native_i32 ( const uint8_t bytes[4] )

static

Definition at line 47 of file blendthumb_extract.cc.

References data.

Referenced by blendthumb_extract_from_file_impl().

file_read()

bool file_read ( FileReader * file, uint8_t * buf, size_t buf_len )

static

Definition at line 56 of file blendthumb_extract.cc.

References FileReader::read.

Referenced by blendthumb_extract_from_file_impl(), and BLI_filereader_new_file().

file_seek()

bool file_seek ( FileReader * file, size_t len )

static

Definition at line 61 of file blendthumb_extract.cc.

References blender::Array< T, InlineBufferCapacity, Allocator >::data(), len, FileReader::read, and FileReader::seek.

Referenced by blendthumb_extract_from_file_impl(), and BLI_filereader_new_file().

thumb_data_vertical_flip()

void thumb_data_vertical_flip ( Thumbnail * thumb )

static

Definition at line 28 of file blendthumb_extract.cc.

References free(), thumb_data_vertical_flip(), top, x, and y.

Referenced by blendthumb_create_thumb_from_file(), and thumb_data_vertical_flip().